#$%^&*AU2013205363A120130523.pdf#####BUFFERING AGENT DELIVERY SYSTEM FOR ANESTHETIC SYRINGE ABSTRACT A syringe (10) for dispensing anesthetic from a cartridge having an interior wall defining a hollow interior for anesthetic, and a piston. The syringe comprising a plunger rod (14) having a sharp distal end adapted to penetrate the piston, a proximal end, and a length extending between the distal end and the proximal end. The length including a recess for receiving a buffering agent (13) and positioned relative to the distal end of the plunger rod to selectively release buffering agent from the recess when the rod extends through the piston and the recess is positioned in the cartridge (30) to reduce acidity of the anesthetic.
